# frozen_string_literal: true

require "rake"
require "fileutils"
require "English"

def macos?
  RUBY_PLATFORM.downcase.include?("darwin")
end

def linux?
  RUBY_PLATFORM.downcase.include?("linux")
end

# this has all the runcoms from this directory.
task :link_files do
  if want_to_install?("git configs (color, aliases)")
    install_files(Dir.glob("git/*"))
  end
  if want_to_install?("irb/pry configs (more colorful)")
    install_files(Dir.glob("irb/*"))
  end
  if want_to_install?("rubygems config (faster/no docs)")
    install_files(Dir.glob("ruby/*"))
  end
  if want_to_install?("ctags config (better js/ruby support)")
    install_files(Dir.glob("ctags/*"))
  end
  install_files(Dir.glob("tmux/*")) if want_to_install?("tmux config")
  if want_to_install?("vimification of command line tools")
    install_files(Dir.glob("vimify/*"))
  end
  run %(
    git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm
  )
end

desc "Hook our dotfiles into system-standard positions."
task install: %i[submodule_init submodules] do
  puts
  puts "======================================================"
  puts "Welcome to YADR Installation."
  puts "======================================================"
  puts

  install_homebrew if macos?
  install_rvm_binstubs

  Rake::Task["link_files"].execute
  Rake::Task["install_tools"].execute
  Rake::Task["install_prezto"].execute
  Rake::Task["install_spacevim"].execute

  install_fonts

  install_term_theme if macos?

  run_bundle_config

  success_msg("installed")
end

task :install_prezto do
  install_prezto if want_to_install?("zsh enhancements & prezto")
end

desc "install spacevim and related config files"
task :install_spacevim do
  run 'curl -sLf https://spacevim.org/install.sh | sed "s;github.com/SpaceVim;xiemala.com/ruilisi;" | bash'
  install_files(Dir.glob("SpaceVim*"))
end

desc "Update spacevim"
task :update_spacevim do
  run %(
    cd ~/.SpaceVim
    git remote set-url origin https://xiemala.com/ruilisi/SpaceVim.git
    git pull --rebase
  )
end

desc "Install tools which are necessary for developers"
task :install_tools do
  if macos?
    run %(
      brew install proxychains-ng
    )
  else
    run %(
      apt install proxychains
    )
  end
end

desc "Prepare necessary components for spacevim/typescript"
task :prepare_spacevim_typescript do
  run %(
    pip install neovim
    npm install -g neovim typescript
  )
end

task :update do
  Rake::Task["vundle_migration"].execute if needs_migration_to_vundle?
  Rake::Task["install"].execute
  # TODO: for now, we do the same as install. But it would be nice
  # not to clobber zsh files
end

task :sync do
  vundle_path = File.join("vim", "bundle", "vundle")
  unless File.exist?(vundle_path)
    run %(
      cd $HOME/.yadr
      git clone https://github.com/gmarik/vundle.git #{vundle_path}
    )
  end
end

task :submodule_init do
  run %( git submodule update --init --recursive ) unless ENV["SKIP_SUBMODULES"]
end

desc "Init and update submodules."
task :submodules do
  unless ENV["SKIP_SUBMODULES"]
    puts "======================================================"
    puts "Downloading YADR submodules...please wait"
    puts "======================================================"

    run %(
      cd $HOME/.yadr
      git submodule update --recursive
      git clean -df
    )
    puts
  end
end

task default: "install"

private

def run(cmd)
  puts "[Running] #{cmd}"
  `#{cmd}` unless ENV["DEBUG"]
end

def number_of_cores
  cores = if macos?
      run %( sysctl -n hw.ncpu )
    else
      run %( nproc )
    end
  puts
  cores.to_i
end

def run_bundle_config
  return unless system("which bundle")

  bundler_jobs = number_of_cores - 1
  puts "======================================================"
  puts "Configuring Bundlers for parallel gem installation"
  puts "======================================================"
  run %( bundle config --global jobs #{bundler_jobs} )
  puts
end

def install_rvm_binstubs
  puts "======================================================"
  puts "Installing RVM Bundler support. Never have to type"
  puts "bundle exec again! Please use bundle --binstubs and RVM"
  puts "will automatically use those bins after cd'ing into dir."
  puts "======================================================"
  run %( chmod +x $rvm_path/hooks/after_cd_bundler )
  puts
end

def install_homebrew
  run %(which brew)
  unless $CHILD_STATUS.success?
    puts "======================================================"
    puts "Installing Homebrew, the OSX package manager...If it's"
    puts "already installed, this will do nothing."
    puts "======================================================"
    run %{ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"}
  end

  puts
  puts
  puts "======================================================"
  puts "Updating Homebrew."
  puts "======================================================"
  run %(brew update)
  puts
  puts
  puts "======================================================"
  puts "Installing Homebrew packages...There may be some warnings."
  puts "======================================================"
  run %(brew install zsh ctags git hub tmux reattach-to-user-namespace ripgrep ghi)
  run %(brew install macvim --with-override-system-vim --with-lua --with-luajit)
  puts
  puts
end

def install_fonts
  puts "======================================================"
  puts "Installing patched fonts for Powerline/Lightline."
  puts "======================================================"
  run %( cp -f $HOME/.yadr/fonts/* $HOME/Library/Fonts ) if macos?
  if linux?
    run %( mkdir -p ~/.fonts && cp ~/.yadr/fonts/* ~/.fonts && fc-cache -vf ~/.fonts )
  end
  puts
end

def install_term_theme
  puts "======================================================"
  puts "Installing iTerm2 solarized theme."
  puts "======================================================"
  run %( /usr/libexec/PlistBuddy -c "Add :'Custom Color Presets':'Solarized Light' dict" ~/Library/Preferences/com.googlecode.iterm2.plist )
  run %( /usr/libexec/PlistBuddy -c "Merge 'iTerm2/Solarized Light.itermcolors' :'Custom Color Presets':'Solarized Light'" ~/Library/Preferences/com.googlecode.iterm2.plist )
  run %( /usr/libexec/PlistBuddy -c "Add :'Custom Color Presets':'Solarized Dark' dict" ~/Library/Preferences/com.googlecode.iterm2.plist )
  run %( /usr/libexec/PlistBuddy -c "Merge 'iTerm2/Solarized Dark.itermcolors' :'Custom Color Presets':'Solarized Dark'" ~/Library/Preferences/com.googlecode.iterm2.plist )

  # If iTerm2 is not installed or has never run, we can't autoinstall the profile since the plist is not there
  unless File.exist?(File.join(ENV["HOME"], "/Library/Preferences/com.googlecode.iterm2.plist"))
    puts "======================================================"
    puts "To make sure your profile is using the solarized theme"
    puts "Please check your settings under:"
    puts "Preferences> Profiles> [your profile]> Colors> Load Preset.."
    puts "======================================================"
    return
  end

  # Ask the user which theme he wants to install
  message = "Which theme would you like to apply to your iTerm2 profile?"
  color_scheme = ask message, iTerm_available_themes

  return if color_scheme == "None"

  color_scheme_file = File.join("iTerm2", "#{color_scheme}.itermcolors")

  # Ask the user on which profile he wants to install the theme
  profiles = iTerm_profile_list
  message = "I've found #{profiles.size} #{profiles.size > 1 ? "profiles" : "profile"} on your iTerm2 configuration, which one would you like to apply the Solarized theme to?"
  profiles << "All"
  selected = ask message, profiles

  if selected == "All"
    (profiles.size - 1).times { |idx| apply_theme_to_iterm_profile_idx idx, color_scheme_file }
  else
    apply_theme_to_iterm_profile_idx profiles.index(selected), color_scheme_file
  end
end

def iTerm_available_themes
  Dir["iTerm2/*.itermcolors"].map { |value| File.basename(value, ".itermcolors") } << "None"
end

def iTerm_profile_list
  profiles = []
  begin
    profiles << `/usr/libexec/PlistBuddy -c "Print :'New Bookmarks':#{profiles.size}:Name" ~/Library/Preferences/com.googlecode.iterm2.plist 2>/dev/null`
  end while $CHILD_STATUS.exitstatus == 0
  profiles.pop
  profiles
end

def ask(message, values)
  puts message
  while true
    values.each_with_index { |val, idx| puts " #{idx + 1}. #{val}" }
    selection = STDIN.gets.chomp
    if (begin
      Float(selection).nil?
    rescue StandardError
      true
    end) || selection.to_i < 0 || selection.to_i > values.size + 1
      puts "ERROR: Invalid selection.\n\n"
    else
      break
    end
  end
  selection = selection.to_i - 1
  values[selection]
end

def install_prezto
  puts
  puts "Installing Prezto (ZSH Enhancements)..."

  run %( ln -nfs "$HOME/.yadr/zsh/prezto" "${ZDOTDIR:-$HOME}/.zprezto" )

  # The prezto runcoms are only going to be installed if zprezto has never been installed
  install_files(Dir.glob("zsh/prezto/runcoms/z*"), :symlink)

  puts
  puts "Overriding prezto ~/.zpreztorc with YADR's zpreztorc to enable additional modules..."
  install_files(Dir.glob("zsh/prezto-override/z*"), :symlink)

  puts
  puts "Creating directories for your customizations"
  run %( mkdir -p $HOME/.zsh.before )
  run %( mkdir -p $HOME/.zsh.after )
  run %( mkdir -p $HOME/.zsh.prompts )

  if (ENV["SHELL"]).to_s.include? "zsh"
    puts "Zsh is already configured as your shell of choice. Restart your session to load the new settings"
  else
    puts "Setting zsh as your default shell"
    if File.exist?("/usr/local/bin/zsh")
      if File.readlines("/private/etc/shells").grep("/usr/local/bin/zsh").empty?
        puts "Adding zsh to standard shell list"
        run %( echo "/usr/local/bin/zsh" | sudo tee -a /private/etc/shells )
      end
      run %( chsh -s /usr/local/bin/zsh )
    else
      run %( chsh -s /bin/zsh )
    end
  end
end

def want_to_install?(section)
  if ENV["ASK"] == "true"
    puts "Would you like to install configuration files for: #{section}? [y]es, [n]o"
    STDIN.gets.chomp == "y"
  else
    true
  end
end

def install_files(files, method = :symlink)
  files.each do |f|
    file = f.split("/").last
    source = "#{ENV["PWD"]}/#{f}"
    target = "#{ENV["HOME"]}/.#{file}"

    puts "======================#{file}=============================="
    puts "Source: #{source}"
    puts "Target: #{target}"

    if File.exist?(target) && (!File.symlink?(target) || (File.symlink?(target) && File.readlink(target) != source))
      puts "[Overwriting] #{target}...leaving original at #{target}.backup..."
      run %( mv "$HOME/.#{file}" "$HOME/.#{file}.backup" )
    end

    if method == :symlink
      run %( ln -nfs "#{source}" "#{target}" )
    else
      run %( cp -f "#{source}" "#{target}" )
    end

    # Temporary solution until we find a way to allow customization
    # This modifies zshrc to load all of yadr's zsh extensions.
    # Eventually yadr's zsh extensions should be ported to prezto modules.
    source_config_code = "for config_file ($HOME/.yadr/zsh/*.zsh) source $config_file"
    if file == "zshrc"
      File.open(target, "a+") do |zshrc|
        if zshrc.readlines.grep(/#{Regexp.escape(source_config_code)}/).empty?
          zshrc.puts(source_config_code)
        end
      end
    end

    puts "=========================================================="
    puts
  end
end

def needs_migration_to_vundle?
  File.exist? File.join("vim", "bundle", "tpope-vim-pathogen")
end

def apply_theme_to_iterm_profile_idx(index, color_scheme_path)
  values = []
  16.times { |i| values << "Ansi #{i} Color" }
  values << ["Background Color", "Bold Color", "Cursor Color", "Cursor Text Color", "Foreground Color", "Selected Text Color", "Selection Color"]
  values.flatten.each { |entry| run %( /usr/libexec/PlistBuddy -c "Delete :'New Bookmarks':#{index}:'#{entry}'" ~/Library/Preferences/com.googlecode.iterm2.plist ) }

  run %( /usr/libexec/PlistBuddy -c "Merge '#{color_scheme_path}' :'New Bookmarks':#{index}" ~/Library/Preferences/com.googlecode.iterm2.plist )
  run %( defaults read com.googlecode.iterm2 )
end

def success_msg(action)
  puts ""
  puts "   _     _           _         "
  puts "  | |   | |         | |        "
  puts "  | |___| |_____  __| | ____   "
  puts "  |_____  (____ |/ _  |/ ___)  "
  puts "   _____| / ___ ( (_| | |      "
  puts "  (_______\_____|\____|_|      "
  puts ""
  puts "YADR has been #{action}. Please restart your terminal and vim."
end